Hello, dear!
Have a nice day!
The possible causes are as follows:
1. The host's iSCSI Initiator Node Name is changed.
You can change the name of the initiator to be the same as the iSCSI Initiator Node Name.
2. The host's Fibre Channel HBA is changed.
You can set the current host port WWN to that of the corresponding host.
Hope can help you!